package aufgabe_03;

public class Kreis {
	private double mittelpunkt = 0;
	private double radius;
	static final double PI = 3.1415;

	public void skaliere(double u) {
		this.radius *= u;
	}

	public double berechneFlaeche()
	{
		return PI * radius * radius;
	}

	public double getRadius() {
		return this.radius;
	}

	public Kreis (double u)
	{
		this.radius = u;
	}
}
